Lucius leander woolley



Looms LEANDnn'WooL-LEY, or ME'DFORD, MASSACHUSETTS.

Laim Patent No. 78,038, dated May 19, 186s;

IMPROVEMENT IN DOOR-LOCKS.

@its dnhnle referrer in in there tetttr what zum mating ont rf tige sans.

TQ ALL PERSONS TO `WHOM THESE PRESENTS MAY COME: l

` f Be it known that I, LUoIUs LEANDER WooLLEiQof Medford, in the county of Middlesex, and State of Massa-- chusetts, have invented an -Improved Lock for Stove or other Doors; and I do hereby declare the same to be fully described in the following specication, and represented in the accompanying drawings, of which- Figure 1 is a rear elevation, and Figure 2' a vertical and transverse section of it as applied to a stove-door. l l d In such drawings, A denotes the stove-door, B the door-npening plate, and C the bolt of the lock. The V said bolt C is placed between parallel guides g g, and so as to bc capable of'being'slid vendwise, backward or forward. It operates with and is opera-ted by a toothed tumbler, D, mounted-on a key-shaft or arbor, It.

The bolt has a toothed recess, a, and two stop-recesses e e, each of the latter beingin the form of an arc of a circle, having a radius equal to'that of the segment ofthe tumbler.

Thetumbler is a segment of a circle, provided with a tooth, d, extended from the middle of its chord, and being flanked by two recesses e e formed within the segment. The tooth, in shape, is like that of a spur-gear.`

When the boltis shot, the segment is within the recessc, and will hold the bolt in position. By. revolving the tumbler in'the direction of the arrow thereon, the tooth 0l will enter the notch a, the segmentwill leave the notch c, the bolt will be shot back, and the tumblr will enter the notch b, and while in such notch, it

will keep the bolt from being thrown forward.

This lock is particularly designed for the doors of stoves used in railway-carriages, and to prevent such doors from becoming accidentally unlocked, especially should the carriage be overturned or thrown olf the track;

While the tumbler isbeing turned, by a 'key applied to its arbor, the' angular parts-ff of the bolt, will pass into the notches e e, so as to allow the tooth to act in the notch of thcholt, andthe segmental part ofthe tumbler to pass out of onestop-notch and into the other.

What I claim as my invention, is-

The combination and arrangement of the tooth-notch a, and the areal stop-notches b c, of the bolt C, with the segmental tumbler D, provided with the tooth'cZ, and the tivo notches e e, arranged as specified.

Looms LEANDER WooLLEY.

Witnesses:

R. H. EDDY,

SAMUEL N. PIPER. 

